155732023 has 4 divisors (see below), whose sum is σ = 155838240. Its totient is φ = 155625808.

The previous prime is 155732021. The next prime is 155732029. The reversal of 155732023 is 320237551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320237551 = 17 ⋅18837503.

It is a cyclic number.

It is not a de Polignac number, because 155732023 - 2¹ = 155732021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155731982 and 155732000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155732021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50878 + ... + 53851.

It is an arithmetic number, because the mean of its divisors is an integer number (38959560).

Almost surely, 2^155732023 is an apocalyptic number.

155732023 is a deficient number, since it is larger than the sum of its proper divisors (106217).

155732023 is a wasteful number, since it uses less digits than its factorization.

155732023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106216.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 155732023 is about 12479.2637202681. The cubic root of 155732023 is about 538.0128415558.

Adding to 155732023 its reverse (320237551), we get a palindrome (475969574).

The spelling of 155732023 in words is "one hundred fifty-five million, seven hundred thirty-two thousand, twenty-three".